Coin-controlled striking and strength tester



F. W. KREMER. 00m CONTROLLED STRIKINGAND STRENGTH TESTER- No. 487,033. I Patented-Nom'ZQ, 1892.

Q i l I mvew co'o (No Model.)

F. W. KREMER. COIN GONTR-OLLED STRIKING AND STRENGTH TESTER.

No. 487,033. Patented Nov. 29, 1892.

- 4 Sheets--Sheet"2.

2mm; 77'7/ p 1 m 4 Shets- Sheet a (N0 Model.)

P.W KREMER. I COIN CONTROLLED STRIKING AND STRENGTH TESTER.

No. 487,033. Patented Nov. 29, 1892.

llliiiii Patented Nov. v29, 1892.

IIII

No Model.)

4 t e e h S P b e 8 h '8 4 D B M. E R K W P 00m CONTROLLED STRIKING AND STRENGTH TESTER,

FFlCEe FRANKLIN W. KREMEILO'F CLEVELAND, OHIO.

COIN-CONTROLLED STRIKI NG AND STRENGTH TESTER.

' SPECIFICATION forming part of Letters Patent No. 487,033, dated November 29, 189 2.

Y Application filed January 4, 1892. Serial No. 416,971. (No model.)

To ctZ-Z whomit may concern.-

Be it-known that I, FRANKLIN W. KREMER,

acitizenof the-United States of America, re- 'stding'at Cleveland, i i-thecounty of Guyahoga and State of .Ohio,,.have invented certain new and useful Improvementsin Coin-Con- This invention relates'to.that 'class of ma chines 'known generally'a's fooin-controlled machines,and more particularly as strengthtest-ing or striking machines.

The object of the invention is, first, to produce suitable apparatus, in combination with a. striking-head or buffer,whereby a blow delivered on the striking-head will act to effect a compression of air contained in a cylinder having direct communication with a pressure gage or indicator to automatically register the force of the blow by the travel of an .indicator-finger over a dial-plate; secondly, in the employmentof suitable mechanism whereby the machine may be set for any predetermined number of operations by 'the insertion of a coin of certainsize; thirdly, to prevent against fraudulent attempts on the part of an operator to set the machine for action by the insertion of coins of smaller denomination or disks-such as buttons, &c.; fourthly, to so construct the apparatus as to compel the operator to actuate an exhaust-valve when the coin is inserted, thereby setting the machine for a number of operations, relieving the gage of the air compressed by the preceding operation, and allowing the index-finger of the gage to return to the zero-point of the scale, and, finally, to avoid complicated or delicate mechanism and produce a machine of this class that shall be at once strong, durable, and comparatively inexpensive of manufacture. 7

With these objects in view the invention consists in a pneumatic striking-machine comprising an air-cylinder having a piston and piston-rod and a striking-head or buder mounted on the outer projecting end of the piston-rod, whereby the air in the cylinder shall be compressed proportionately to the force of the blow delivered on the striking-head;

' furthermore, in combination with the aircylinder a pressure-gage directly connected thereto and adapted to register and indicat the force of a blow delivered on the strikinghead; and, furthermore, in suitable mechanism adapted to operate on the insertion of the coin of certain size to set the machine for a predetermined number of operations and at the same time exhaust the gage and allow the index-finger to return to the zero-point of the scale preparatory to registering and indicating for the next blow, the said mechanism consisting of a standard suitably mounted and having formed therein a slot connecting with a chute leading from an exterior openingin the casing of the machine, this opening being formed in a flattened portion of the surface, which is covered by a projecting flange of an operating handle or knob having plunger working in a slotin the standard which comm unicat-es with the coin-slot. peculiar construction itis necessary to raise the handle or knob before the coin can be inserted,

is raised at the same time, allowing the coin to pass into the plunger-slot and stop ata point between the piston-rod and a' roller loosely mounted on the stud of an arm rigidly secured to a shaft carrying a locking arm. When the handle or knob is released, it falls by gravity, carrying with it the plunger, which comes'in contact with the coin and forces it out of the slot, thereby throwing the roller-arm outwardly, which motion. is transmitted to the locking-arm to u'nlock a ratchet device.

To obtain, for example, two operations of the machine by the insertion of a coin of a certain size, a double-ratchet is employed formed of two disks rigidly secured together, the larger disk having two teeth for every tooth of the smaller. The pawlof thelarger wheel is formed by a spring-pawl on the piston-rod, thereby allowing two strokes of the piston before the spring locking-pawl of the smaller wheel is operated or engaged by a tooth which actuates the locking mechanism. This mechanism consists of a locking-arm mounted on or near the end of a spring-held rod, thelatter having secured at or near the opposite end the coin-actuated arm, whereby as the plunger engages the coin to force it out of the slot motion will be transmitted to the locking-arm, elfectiug a disengagement and by reason of the connection the plunger a .lo\vn\vardly.-.eXtending rod connected witha By this between said locking-arm and a recess in the plunger rodu .At the same time a=spring;aoe tuated'pawlautomatically operates to lock said arm, .thus setting the machine for action. An exhaust-valve interposed in the connection between'the pressure-gage and theaircylinder is connected with a projection of the downwardly-extending rod of the-operating handle or knob, whereby said exhaust-valve is actuated when the knob is raised.

Furthermore,-the inventionconsists .in:vari ous novel details of construction whereby the objects are attained.

In the drawings forming part of this specication, wherein the similar letters; Ofr'lQfGt-i ence indicate similar parts in theY-several. views, Figure 1 is a view-inside elevationofi the-machine mounted on a pedestal. Figt-Z is an enlarged view 1 in elevation of the machine prqper with the casing cut away and:

various parts sectioned. Fig. 3 lean-enlarged:- view: in perspective of: the: coin-v operatedmechanism, together with the exhaustevalveand connections and the double ratchet and pawls.- Fig.4 is a detail view of the-standard. with:v the front platv removed, showing; the

eoin slotand plnnger elevated. Fig; 5 irradetaii view of the locking device--and='aecom-- panyingpartspfFig; 6 is ah'orizontal-seetional view' vofthe combined non-return-and "exhaust valve. Fig. 7 is-a det ail sectional view-otthepiston, showing the aiifomat-ic inlet-valves.-.

Fig: Seissazdetail sectional view illust-rati-n g. thelocking-meehanism.

In the. drawings; A indicates the air-cylinder, havingformedin the upper portion-there of am outlet A. Connection.- betweensaid outlet and-a-non-return valve B- is effectedby a flexible tube B Apiston-red O, mounted and. guided in a snpporting tnbe-D, has secured onits;inner end the piston E of the aircylinder and on its outer end a striking-head or butter F, providedwith a protecting-plate f. The piston E is provided with a series of airssupply passages e, which are controlled by a flap val-ve e secured to the piston-head bymeans 0f the washer and screw e ,i.whereby. as the plunger is drawn outwardly .the cy1-- inder is automatically supplied with air. Atte'r the air has-been forcedoutaof .the cylinder bya blow delivered on the striking.-'

head or'buflYer-it enters'a prcssuregageH- 'through a' flexible tubing. B the return bei-ng:

prevented by a non-return valve formed incombination with: the exhaust-valve B. The gage,- acting in the well-known manner, regis' tom thepressure ofsairin pounds, which' representstheforce of --the .blow.

. extendingrod j connected to an arm j; Said- The coin-operated mechanism consists, ofan operatinghandle or knob J, havingra projectingfiange j which is designed to cover the coin-slotin the casing, and a downwardly arm-j. is inturnconnected with a plunger 1a,:

working in a slot 10 of the standardiK,'by.; the screw 7, which passes through anape'r ture formed in the upper end of the plunger- (chose to the threaded aperture of lug j. A- red j,

passipgthrough an apertnre formed in a lug j of the arm 3', is connected with a pivoted leverb of the exhaust-valve B. Adjacent to" k into'slot k andfalls' at a point near the .bottom of the plunger-slot between the colla r of the piston-rodanda loosely-mounted roller of a pivoted arm I. As the operator. pushes-- on the knob J the lower end of the plunger engages the coin, which acts asakey,

and forces it out of the slot into a suitable.

receptacle in the pedestal. As the coinis pushed'ont of the slot by the plunger it causes the arm 1, carrying the roller, to swing out-.

wardly, thereby-transmittingmotion through a rod 1 provided with a torsinal spring, to the locking-arm Z. This movement effects-a disengagement between the latter'and a reeess-c of the plunger 0. At the same time-the pawl Z is actuated by the spring Z and forced downwardly and the lug l engages the locking=arm, holding the same out of alignment with said recess'c, thereby setting the ma chine for action.

The locking-arm '1 as shown in-Fig. 3, normally. engages the under side of the lng l which is-so proportioned that the motion given-the arm-l by the passage of the coin of certain diameter-for example, a five -.cent piece--is justsuflicient to cause the locking- 'armto pass from under said lug, which is 1mmediately forced downwardly by the spring Z", thereby causing the locking-arm to engage the face'l and retain it in that position until the pawl .l is engaged by a tooth of the ratchet-j wheel L.

To obtain two operations .of't he machine by the insertion of a coin, a double ratchet is provided,-consisting of two disks secured rigidly together, the disk L having eight teeth and thedisk L sixteen, as shown in Fig. 3, or with six and twelveteeth, respectively, as show-n in Figs; 2 and 5. 'A slot 01 in the sup-. porting-tube D- is formed to allow forthe travel of a springspressed dog or pawl 0, se-- cured in a slot of the piston-rod. Said dog-0' is-adapted to engage the'teeth of thedisk L and thusit will be understood that on the 1 first stroke of the piston the dog 0 moves the disk. L one tooth, which brings the pawl l midway ofthedistance between'the teeth on .the disk'L,'and at the second stroke of the piston the dog 0 moves the disk L another tooth, causing a tooth of the-disk L toengage,

ithe pawl l and turn it upwardlyon its pivot against the actidn of the spring-l thus allowing. the locking-arm to spring. backand again engage the recess 0 of the plunger 0, being "retainedin that position by the lug Z to prevent further operation until another coin is inserted."

If it is desired to obtain three operations, the disks aretoothed in'the proportion of one to three or four operations, one to four, and

so on.

The operation of the machine is as follows: The operating-handle is raised to exhaust the pressure-gage and allow the coin to be inserted. After the coin has arrived at the bottom of the plunger-slot and the plunger has pushed it through, thereby partially rotating the rod Z carrying the locking-arm Z by forcing it outwardly against the action of the spiral spring secured on thesaid rod, the ratchet is unlocked -and'the machine is set for action. As the blow is delivered onthe striking-head or buffer thepiston is given its forward stroke, compressing the air in-the cylinder and forcing it through the'flexible tubing and through anism, which operates as heretofore described.

Having fully described my invention, what I desire to secure by Letters Patent is' 1. In a striking-machine, the combination, with a pneumatically-operating bufier, of a movable rod having mounted thereon a piston-headadapted to operate in an air-cylinder and a suitable connection between saidair cylinder and a pressure-gage, substantially as described. r

2. In a striking-machine, the combination, with a pneumatically-operating butter, of the piston rod and head, theair-cylinder communicating with a pressure-gage through a flexible connection, and a non-return valve interposed between said air-cylinder and pressuregage, substantially as described.

3. In a striking-machine, the combination, with a pneumatically-operating buflfer, of a movable rod carrying a'piston-head adapted tooperate in an air-cylinder, said air-cylinder having communication with a pressure-gage through a flexible connection, and a combined non-return and exhaust valve inter posed in said conneetion between said air-. cylinder and pressure-gage, substantially as described, and for the purpose set forth.

4. In a striking-machine, the combination, with'apneumatically-operatingbudersecured on the end of a movable rod, of an air-cylinder connecting with a pressure-gage and provided with a piston, said piston being secured on the opposite end of said movable rod and having valves and passages, substantially as described, to form an automatic inlet or supply, as and for the purpose set forth.

- 5. In a striking-machine, the combination, with a pneumatically-operating bufien'ot the automatic locking device comprising the multiple or differential ratchet and pawls and the-locking-arm mounted on a rod carrying the coin-actuated arm, all parts being constructed and arranged, substantially as described, to allow for a. multiple action of the piston previous to the operation of the locking parts, as set forth.

V 6. In a striking-machine, an automatic locking device, substantially as descrlbed,

comprising a double or difierential ratchet, said ratchet being toothed proportionately to the number of actions the machine 1s set for by the insertionof a coin, the ,pawlspngaging said double ratchet, and the lockingarm mounted on a rod carrying the coin-actuated arm, as and for the purpose set forth.

7. In a striking-machine, the combination,

with a pneumatically-operating buifer, of a' vertically-sliding operating handle or knob connecting with a plunger, an exhaust-valve connecting with said operating-knob, the coin andplunger slots arranged as described, and

the spring-pressed rod carrying a locking-I arm, and coin-actuated arm for operating said locking-arm, substantially as set forth.

8. In a striking-machine, a pneumaticallyoperating buifer having a back plate, said butter and back plate removably secured ona piston-rod guided in a supporting-tube and provided with suitable means adapted to cooperate with a locking device at predetermined intervals, substantially as described.

'9. In 'a striking-machine, a pneumaticallyoperating bufier removably secured on one extremity of a piston-rod having a springdogto engage "and actuate a locking device,

substantially as described.

10. In a striking-machine, the combination,

with an automatic locking device, substantially as described, comprising the double ratchet L L, the pawls 0 l, the latter provided with the lug l and the locking-arm i said arm 2 mounted on the rod 1, carrying the coinactuated arm Z, of the standard K,.the slots k 70 formed in said standard, and the plunger 70, connecting with the operating-knob J, said knob having a flange j, covering the coin-slot, whereby said knob must be elevated before the insertion of a coin,as and for the purpose set forth. I

11. In a striking-machine,the combination,

with a pneumatically-operating bu Eer, of the air-cylinder connecting with a pressure-gage, the combined non-return and exhaust valve interposed in said connection, the piston havinga self-acting inlet-valve, the automatic locking device, the coin-actuated mechanism,

and the operating-handle connected with said FRANKLIN w. KREMER.

\Vitn esses THEODORE L. STRIMPLE, ABRAHAM HEnsHEY. 

